Format sheet with self-sealing layer for the formation of index tabs

ABSTRACT

A format sheet with a pressure-sensitive self-sealing layer from which single tabs for the formation of index tabs are removable by means of punch sections, the single tabs disposed in rowformed one-to-another followed position, comprising a nonripped, protective sheet, a sealing layer side of the format sheet covered up with the nonripped protective sheet, the latter adhering to the former and easily releasable therefrom. The format sheet being covered by the nonripped protective sheet and comprises precut tabs, which have a fold line and a tab section forming a writing surface which is adapted to be foldable over the fold line after the precut tab is removed from the protective sheet. A clear view foil is disposed on the upper side of the format sheet, and having a self-sealing layer, the clear view foil being precut to individual cover sheets for each of the precut tabs. The precut tab is cut at a head-sided separating cut and a foot-sided separating cut and including adjacent the headsided separating cut a foldable section which is sealing material repelling and foldable about the fold line, the latter of which constitutes perforations. The clear view foil projects beyond the foldable section, and the clear view foil being held back in corresponding staggering disposition relative to the foot-sided separating cut.

United States Patent [72] Inventor Egon Heimann Primary Examiner]osephR. Leclair Falkenberg 67. 56 Wuppertal-Elberfeld. Assistant Examiner-J.M. Caskie Germany A1!0rneyErnest G Montague [21] Appl. No. 795,298 [22]Filed Jan. 30, 1969 [4S] Patented June 22, 1971 ABSTRACT: A format sheetwith a pressure-sensitive selfsealing layer from which single tabs forthe formation of index tabs are removable by means of punch sections,the single tabs disposed in row-formed one-to-another followed position,comprising a nonripped, protective sheet, a sealing layer side of theformat sheet covered up with thenonripped protective sheet, the latteradhering to the former and easily releasable [54] FORMAT SHEET WITHSELESEALING LAYER therefrom. The format sheet being covered by thenonripped FOR THE FORMATION OF INDEX'TABS protective sheet and comprisesprecut tabs, which have a fold line and a tab section forming a writingsurface which is 2 Chums 14 'i adapted to be foldable over the fold lineafter the precut tab is 52 0.8. CI 206/56 AB removed from the ProtectiveSheet- A clear View foil is 51 B650 83/00 disposed on the upper Side ofthe format Sheet and having a 501 Field of Search 206/56 A3 Self-Sealinglayer, the clear view foil being Preeut to individual cover sheets foreach of the precut tabs. The precut tab is cut [56] References Cited at3 headjided lseparating can and; fpotsided separatirt glgut an inc u inga jacent t e ea -si e separating cut a o a- UNITED STATES PATENTS blesection which is sealing material repelling and foldable 2,797,8017/1957 Bishop, Jr 206/56A3 about the fold line, the latter of whichconstitutes perfora- 3,070,482 12/1962 Cummingham. 206/56 A3 X tions.The clear view foil projects beyond the foldable section, 3,3 34,7368/1967 Cole et al 206/56 A3 and the clear view foil being held back incorresponding stag- 3,252,234 5/1966 Goodman 206/56 A3 X geringdisposition relative to the foot-sided separating cut.

PATENTEDJUN2 2 |97| SHEET 1 BF 3 INVENTOR.

PATENTED JUH22|97| 3.586; 160

SHEET 2 or 3 IN VENTOR.

PATENIEU JUH22 i971 SHEET 3 UF 3 INVENTOR.

FQRMAT SI'IEET WITH SELF-SEALING LAYER FUR THE FORMATION OF INDEX TABSThe present invention relates to a format sheet with a selfsealinglayer, which is covered with a protective paper and from which tags areseparable for the formation index tabs having a field for receivingwriting thereon.

It is known to divide format sheets of this type into precut tags, whichhave a perforated folding line, which defines a narrow edge section ofthe tag, which edge section is foldable after writing thereon andremoval of the tag from the protecting paper sheet. The writing field isnot covered up. This formation results in a particularly goodhandleability, with which the storing and the use of the index formingtags can take place, in particular the removal of the individual tagscan be assured without use of a tool and also an error-free mounting ofthe tab.

It is known from experience that, however, after application of the tabson the writing field projecting from the file cards they are stronglyused up in case of much used files, due to frequent engagement and,under circumstances, also removal of the card by gripping of the tab.The most individual writing becomes illegible and, under circumstances,also the writing field is torn off since the sharp edge of the card hasa cutting effect.

It is therefore, one object of the present invention to provide anembodiment in which these drawbacks are removed by covering of thewriting field and desharpening of the engagement edge thereof. This ispossible in a plurality of embodiments.

One embodiment comprises, in accordance with the present invention, anarrangement according to which the generic format sheet is equipped witha precut clear view foil having a self-sealing layer, whereby, on theone hand, the cover foil projects over the head sided separating line ofthe format sheets, and, on the other hand, jumps backwardly relative tothe other foot-sided separating line.

In view of this arrangement, an index tab is obtained, the writtenfoldable field forming an abutment edge usable for the alignment of thetab is protectingly coverable after the sealing of the tab on the filingcard by means of a clear view covering foil. In this case, the length ofthe cover foil enlarged by the overreaching of the cover foil beyond thewriting field bridges over the split springing over the abutment edge ofthe tab between the split and the file card edge. This brings about inan advantageous manner the bridging over closure of the abutment splitand securing of the rigid adherence of the tab.

In order to assure, in case of a precut format sheet forming the tabs,the easy handleability in spite of staggering of the tab sections andcover foil sections, in accordance with the present invention the formatstrip disposed adjacent clear view cover foil projecting thereover isequipped for rejecting the sealing material.

This embodiment makes possible the individual release of the formatsheet section, each forming a tab, from the protecting sheet causing theholding together of the precut format sheets, by the feature that theoverreaching clear view foil can be secured easily, in spite of itsself-sealing layer from the adjacent format sheet sections.

If now in place of the carton paper or the like material should be usedfor the index tab a film of synthetic material, in accordance with afurther embodiment of the present invention, the progressive arrangementof the invention is brought about in an advantageous manner such, thatthe format sheet consists of a clear view film, which is divided byincisions in tags, both side ends of which are equipped with aself-sealing layer leaving open a median field extending on both sidesof a seam line. These film tags fonning signs and disposed on aprotecting paper sheet resulting by precutting of format shcets bringabout by folding on the seam line a mounted glueable index tab, whichforms then a pocket for insertion of a writing label.

In order to overcome manufacturing difficulties during the production ofthe sealing-free field forming the pocket on the clear view foil fonnatsheet, in accordance with a furtherembodiment of the present invention,an adhering transparent protecting paper is provided on the format sheetequipped throughout with a self-sealing layer, from which protectingpaper a covering section is precut extending on both sides of the seamline and which covering section adheres nonreleasably on the centerfield of the clear view foil.

With these and other objects in view, which will become apparent in thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawings, in which:

FIG. I is a schematic perspective view of a format sheet designed inaccordance with the present invention, which format sheet has threelayers;

FIG. 2 is a fragmentary section of the format sheet shown in FIG. 1,shown at an enlarged scale;

FIG. 3 is a section along the lines 3-3 of FIG. 2;

FIG. 4 is an elevation of the format sheet section forming an index taband removed after the folding of the writing field;

FIG. 5 is a section along the lines 5 5 of FIG. 4;

FIG. 6 is an elevation of the tab glued to a file card;

FIG. 7 is a section along the lines 7-7 of FIG. 6;

FIG. 8 is a perspective view of another embodiment of the presentinvention, whereby the format sheet according to the present inventioncomprises preprinted fields for formation of so-called tabs;

FIG. 9 is an individual section of this format sheet at an enlargedscale seen from the back;

FIG. 10 is a schematic section thereof;

FIG. 1 l is an elevation of the tab with folded writing field;

FIG. 12 is a section thereof;

FIG. 13 is an elevation of a tab in glued-on position; and FIG. 14 is aschematic cross section of the showing in FIG.

Referring now to the drawings, and in particular to FIGS. 1- 7, theformat sheet comprises a carton paper sheet I, the lower face of whichshown in FIG. 1 is throughout equipped with a self-sealing layer 2 andis covered by means of a sealing repellent, for instance, siliconizedprotecting paper sheet 3. The latter is nonripped up while the cartonpaper sheet 1 is divided into sections by means of separating cuts 6 and7 is taglike sections serving the formation of individual index tabs,which sections are held together by the protecting paper sheet 3,however, being capable of being individually removed, without use of atool by simple, easy release individually.

On the upper side the carton paper sheet 1 is covered up by a clear viewcover foil 4, which has likewise a self-sealing layer 5, by means ofwhich the foil adheres partly, in particular in the zone A of the tag.The cover foil 4 is cut through on the cutting lines 6 and 7 and thus,on the one hand, that means on the head side of the section,overstretching separating edges,

on the other hand, on the foot side of the section, rearwardly extendingseparating edges are formed.

The format sheet is equipped furthermore with a so-called separatingperforation 8 through which a foldable section 9 of the taglike formatsheet section (FIG. 2) is created, which serves as a writing field. Thissection B is sealrepellent, by example, by a silicon application. Bythis arrangement, the writing field 9 can be released from the coverfoil 4 and can be folded over in accordance with FIGS. 4 and 5, so thatthe index tab ready to be glued on is created. Due to the folding anedge x is created which is required for the purpose of the alignedsetting on of the tab to the tag sheet edge x.

The gluing on of the tab takes place by pressing, performed on thebackside of the tag sheet, the label along its zone A so that the freelydisposed self-sealing layer 2 adheres, upon removal of the protectingpaper, rigidly to the file sheet 10. Thereafter, after the writing field9 is filled out, the clear-view cover foil 4, in accordance with FIGS. 6and 7, is likewise folded over. The cover then covers over the writingfield 9 and bridges over, furthermore, the split between the abutmentedges 1 and x. The self-sealing layer 5 of the cover foil 4 causes anonreleasable adherence thereof, namely over the writing field 9, aswell as on the file card l0v Not only is the writing of the fieldprotected, but also a stabile seat of the signal, furthermore also aprotection against damage or even tearing off of the index head isbrought about.

Due to the one-sided extension of the cover foil section 4 relative tothe format sheet paper section 1 (FIGS. 1 and 3), provided for obtainingthe above stated overpowering of the extension split x and x, astaggering of these sections relative to each other on the protectingsheet 3 is obtained. The thereby created zone C of the tag is likewiseseal-repellent, by example, siliconized, so that a simplified release ofthe cover foil also from the adjacent tag is formed during the removalfrom the protecting sheet.

In the format sheet disclosed in FIG. 8, the above-mentioned embodimentaccording to the present invention is substantially the same. The formatsheet sections equipped in smaller dimensions as so-called tabs mostlyhave the following three layers: Carton paper sheet 1, protecting sheet3 and cover foil 4. The separation sections 6 and 7 cutting merely thecarton paper sheet I, as well as the separation perforation 8 arecorrespondingly provided.

The cover foil 4 is separated in accordance with the lines 6 and 7.FIGS. 9-14 disclose the proper formation and use of the tab, so that afurther explanation is not required.

It is to be understood that the term package" as used hereinafter is tobe construed as an arrangement of index tabs on a protective sheet.

While I havedisclosed several embodiments of the present invention, itis to be understood that these embodiments are given by example only andnot in a limiting reuse.

I claim:

1. An indextab package comprising a protective sheet,

a format sheet having a pressure sensitive self-sealing layer on a sideof said format sheet covered up with said protective sheet, the latteradhering to the self-sealing layer of the former and easily releasabletherefrom,

said format sheet being covered by said protective sheet and comprisesprecut tabs,

each of said precut tabs having a perforated fold line and a foldablesection forming a writing surface which is adapted to be folded oversaid fold line after each of said precut tabs is removed from saidprotective sheet,

a transparent foil disposed on the other side of said format sheet andhaving a self-sealing layer positioned against said other side of saidformat sheet,

said transparent foil being precut to individual cover sheets for eachof said precut tabs,

said foldable section being sealing material repellent facing saidself-sealing layer of said transparent foil and foldable about said foldline,

said transparent. foil at one end projecting beyond said precut tabsbeyond said foldable section thereof,

said precut tabs projecting beyond said transparent foil at the oppositeend of the latter,

each of said precut tabs and its corresponding transparent foilconstituting an index tab, and

said index tabs positioned on said protective sheet with the projectingportion of the transparent foil of one of said index tabs overlying theprojecting portion of the precut tabs of the next adjacent index tab.

2. The index tab package, as set forth in claim 1, wherein saidprojecting portion of said precut tabs is sealing material repellentfacing said self-sealing layer of said transparent foil of the nextadjacent index tab.

1. An index tab package comprising a protective sheet, a format sheethaving a pressure sensitive self-sealing layer on a side of said formatsheet covered up with said protective sheet, the latter adhering to theself-sealing layer of the former and easily releasable therefrom, saidformat sheet being covered by said protective sheet and comprises precuttabs, each of said precut tabs having a perforated fold line and afoldable section forming a writing surface which is adapted to be foldedover said fold line after each of said precut tabs is removed from saidprotective sheet, a transparent foil disposed on the other side of saidformat sheet and having a self-sealing layer positioned against saidother side of said format sheet, said transparent foil being precut toindividual cover sheets for each of said precut tabs, said foldablesection being sealing material repellent facing said self-sealing layerof said transparent foil and foldable about said fold line, saidtransparent foil at one end projecting beyond said precut tabs beyondsaid foldable section thereof, said precut tabs projecting beyond saidtransparent foil at the opposite end of the latter, each of said precuttabs and its corresponding transparent foil constituting an index tab,and said index tabs positioned on said protective sheet with theprojecting portion of the transparent foil of one of said index tabsoverlying the projecting portion of the precut tabs of the next adjacentindex tab.
 2. The index tab package, as set forth in claim 1, whereinsaid projecting portion of said precut tabs is sealing materialrepellent facing said self-sealing layer of said transparent foil of thenext adjacent index tab.